My two cents...
Minor nitpick, but needless to say, if it's pre-historic times, it goes without saying there isn't going to be anything modern around. Unless you specifically point out modern things i.e. Delorean in the background, etc.This is pre-historic times, so there is not going to be anything modern around.
General body shape? Yes. Do we need to know what he's wearing right now? I'm going to go with no. The script says to me, "I need a silhouette of a dude away from the fire." So give him a vague body shape and call it good.Even for a silhouette, if you want him shown clearly enough to be recognizable as a person, then the artist needs to know what he looks like, what he's wearing, and what he's doing
If you're referring to the "Moving past the tribe around the fire, we are on the hill". I would argue that's just giving reference in the script, reference to where this panel is "looking" in relation to where the previous panel was "looking"The way that first sentence is written, someone might say it was a moving panel.
I don't see it that way, depending on the angle we're viewing the old man from and the distance, we could not see the walking stick if it was right beside him or appeared right behind him from our viewing angle.And the walking staff is magically delicious.
Page 1 ending: I was not interested enough to turn the page. We have a leader caveman around a bunch of other cavemen, he's looking at an old dude. FIN
Another meh point for me, if I could come up with some names, I would, if not I would include note to the letterer to come up with some generic psychology book names.For the reader to know that these are books on psychology, either the artist or the letterer is going to have to invent book titles. Wouldn't you rather it was you?
Page 5, Panel 4: 54 words in one panel of a 5 panel page that has dialogue in the rest of the panels. Too much.
Overall: I was bored. I wanted something to get going in the first 5 pages. Maybe a gnarly caveman fight, or Brian flipping out and punching his therapist, maybe he discovers he has a telekinesis and makes his therapist's brain explode ala Scanners. Something.
On the other the hand, it has promise, its a beginning. The link (if there is one) from caveman to Brian is mildly interesting, maybe if him and the leader caveman looked similar? Also, the dialogue wasn't too bad overall. Panel description needed a little bit more in places, Calvin pointed most of those out.